AI agents call sigsci_search_requests to retrieve information from Sigsci without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries request data from a Signal Sciences site with optional filtering. It performs no side effects, creates no data, executes no external operations, and makes no modifications. It is a straightforward read operation consistent with the server's read-only nature.
From the tool's definition Tool name 'sigsci_search_requests' and description 'Search requests for a site with optional query filters' indicate a query/search operation. Server description explicitly states '40+ read-only tools'.
Attacks that exploit this kind of access
Search requests for a site with optional query filters. It is categorised as a Read tool in the Sigsci MCP Server, which means it retrieves data without modifying state.
Register the Sigsci MCP server in PolicyLayer and add a rule for sigsci_search_requests: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Sigsci. Nothing to install.
sigsci_search_requests is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sigsci_search_requests rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for sigsci_search_requests. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
sigsci_search_requests is provided by the Sigsci MCP server (yuki777/sigsci-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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